File trolley



FIG. 1 is a perspective view of my new design with the lower slideable element in the retracted position;

FIG. 2 is perspective view of my new design with the lower slideable element in the extended position;

FIG. 3 is a left side view of my new design;

FIG. 4 is a front view of my new design;

FIG. 5 is a right side view of my new design;

FIG. 6 is a rear view of my design;

FIG. 7 is a top view of my design; and,

FIG. 8 is a bottom view of my design.

The broken line showing of files in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a file trolley, as shown and described. 